. Elementary and dental radiography / by Howard Riley Raper . the source of electric supply, thedry cell, is so small. One dry cell cannot produce enough electricity tr>cause a serious or very painful accident. This should appeal to anyone,but particularly to men whose knowledge of electricity is limited. READIXu RADIOGRAPHS 397 The extreme value of the electric test for pulpTios 447flandB vitality can best be illustrated by recounting its use in the following case: The end of the root of anupper lateral was resected to cure an abscess. The wound made at thetime of the operation did not hea
. Elementary and dental radiography / by Howard Riley Raper . the source of electric supply, thedry cell, is so small. One dry cell cannot produce enough electricity tr>cause a serious or very painful accident. This should appeal to anyone,but particularly to men whose knowledge of electricity is limited. READIXu RADIOGRAPHS 397 The extreme value of the electric test for pulpTios 447flandB vitality can best be illustrated by recounting its use in the following case: The end of the root of anupper lateral was resected to cure an abscess. The wound made at thetime of the operation did not heal normally. A radiograph was made,Fig. 447A. It seems to show that the central is involved in the lateralsall-cess cavity. The central was tested for vitality of its pulp. It re-sponded to the electric test, indicating a vital pulp. Another radiographwas Fig. 447B. This second radiograph, made at a different angle,shows no involvement of the central, and what may or may not be aninvolvement of the cuspid. The shadow passing to the apex of the cuspid.
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